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Hearing LossVSBRWNCT00748540

Safety and Efficacy of the Vibrant Soundbridge (VSB) for Mixed and Conductive Hearing Losses

A study testing Vibrant Soundbridge in people with Hearing Loss, run by Med-El Corporation at 11 sites in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The purpose of this investigation is to collect feasibility data to assess the safety and efficacy of the Vibrant Soundbridge (VSB), a medical device designed to provide benefit in aided hearing thresholds, speech perception and sound quality to certain individuals with hearing loss with minimal changes in residual… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Hearing Loss
What is being tested?
Vibrant Soundbridge
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
50 participants
Where
11 sitesUnited States
Study dates
Dec 2007to Mar 2014
Phase
Interventional
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Adults, 18 years of age or older at time of implantation
  • English as the primary language
  • Appropriate motivation and expectation levels
  • Geographically and physically able to return to the investigational center for scheduled evaluations and follow-up appointments.
  • At least a 28-day unsuccessful hearing aid trial (within the past 24 months prior to enrolment).
  • Persons who after being informed that a different hearing aid than the one they currently have may provide improved hearing, still request an implant.
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  • Ability to undergo general anesthesia
  • Audiological tests suggest either a conductive or mixed hearing loss. The non-implanted ear may fall outside these criteria; however, threshold levels may not be worse than severe sloping to profound.
  • Conductive Hearing Loss
  • Pure-tone bone-conduction threshold levels in the ear to be implanted shall fall at or within the levels stated below. There should be an air-bone gap of 15 dB HL or more at three or more of the frequencies 500, 1000, 1500, 2000, 3000, and 4000 Hz. Pure-tone air-conduction levels should indicate the presence of at least a moderate hearing loss of at least 41 dB HL. Air conduction levels are not limited on the upper end.
  • Upper Limits of Bone Conduction Thresholds for Conductive Hearing Loss Frequency (kHz) 0.5 1.0 1.5 2.0 3.0 4.0 Bone Conduction upper limit (dBHL) <25 <25 <25 <25 <25 <25
  • Mixed Hearing Loss
  • Pure-tone bone conduction threshold levels in the ear to be implanted shall fall at or within the levels stated below. There should be an air-bone gap of 15 dB HL or more at three or more of the frequencies 500, 1000, 1500, 2000, 3000, and 4000 Hz. Bone conduction thresholds at least three of the frequencies should be 26 dB or greater. Pure-tone air-conduction thresholds should be, on average, at least moderately impaired of 41 dB or greater. Air-conduction levels are not limited on the upper end.
  • Lower and Upper Limits of Bone Conduction Thresholds for Mixed Hearing Loss Frequency (kHz) 0.5 1.0 1.5 2.0 3.0 4.0 Bone Conduction lower limit (dBHL) 0 0 0 0 0 0 Bone Conduction upper limit (dBHL) 45 50 55 65 65 65
  • Good potential for aided speech recognition as indicated by a pre-operative monosyllabic word score of > 30% in the ear to be implanted as measured under headphones at 40 dB SL or at MCL
  • Hearing aid trial with appropriately fitted hearing aids of at least 28 days duration within the past 24 months, unless the subject is unable to wear hearing aids for medical reasons
  • Most recent audiometric data, if available, judged to be of good test-retest reliability.

Who cannot join

  • Hearing loss of purely sensorineural origin
  • Retrocochlear or central auditory disorders
  • Active middle ear infection
  • Tympanic membrane perforation, ears with previously reconstructed tympanic membranes may be included
  • Bone-conduction thresholds in the ear to be implanted that have demonstrated a recent fluctuation at two or more frequencies of 15 dB in either direction in the last 6 months, as demonstrated by serial audiograms.
  • History of post-adolescent, inner-ear disorders, such as vertigo or labyrinthitis
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  • Chronic or non-revisable vestibular or balance disorders
  • Middle ear infections not responsive to medical treatment
  • Skin or scalp conditions that may preclude attachment of the Audio Processor or that may interfere with the use of the Audio Processor
  • Chronic pain in or around the head
  • Current or previous use of an active hearing implant in either ear.
  • Any known physical, psychological, or emotional disorder that may interfere with the completion of scheduled follow-up evaluations
  • Developmental delays or organic brain dysfunction

Trial locations and contacts

11 sites in 1 country.

11 sites in 1 country

United States11 sites
  • University of North Carolina Hospital

    Chapel Hill, North Carolina, 27514

  • University of Texas Southwestern Medical Center

    Dallas, Texas, 75390

  • Ear Institute of Chicago

    Hinsdale, Illinois, 60521

  • University of Kansas Medical Center

    Kansas City, Kansas, 66160

  • Midwest Ear Institute

    Kansas City, Missouri, 64111

  • House Ear Institute

    Los Angeles, California, 90057

  • University of Miami Ear Institute

    Miami, Florida, 33136

  • Pittsburgh Ear Associates

    Pittsburgh, Pennsylvania, 15212

  • Jennifer Maw, MD

    San Jose, California, 95124-3910

  • Silverstein Institute

    Sarasota, Florida, 34239

  • Capitol Region Ear Institute

    Slingerlands, New York, 12159

Other trials in United States

About this study

Official title: Clinical Trial of the Vibrant Soundbridge as a Treatment for Conductive and Mixed Hearing Losses, Using Direct Round Window Cochlear Stimulation.

The purpose of this investigation is to collect feasibility data to assess the safety and efficacy of the Vibrant Soundbridge (VSB), a medical device designed to provide benefit in aided hearing thresholds, speech perception and sound quality to certain individuals with hearing loss with minimal changes in residual hearing. The VSB is currently indicated for adults with moderate-to-severe sensorineural hearing loss. Under the present investigation, adults with conductive and mixed hearing losses who are not successful users of traditional amplification will be assessed.

Conditions
Hearing Loss
Being tested
Vibrant Soundbridge
Keywords
sensorineural hearing loss, conductive hearing loss, mixed hearing loss
Medical subject headings
Hearing Loss, Hearing Loss, Sensorineural, Hearing Loss, Conductive, Hearing Loss, Mixed Conductive-Sensorineural

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Vibrant SoundbridgeDevice

    Also called VSB, VSB RW, RW VSB, Round Window Stimulation

    Mixed and conductive hearing loss using round window stimulation

Study groups in NCT00748540
Study groupRoleWhat they receive
ImplantedExperimentalImplanted with Vibrant Soundbridge
Receives: Device: Vibrant Soundbridge

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Speech Perception in Quiet (Monosyllables) in Patients Implanted With Vibrant Soundbridge

    Percent correct on words in quiet at the preoperative interval compared to 6 month post operative interval.

    Measured: 6 months post initial activation

Secondary outcomes (3)
  1. Functional Gain Compared to Preoperative Unaided Condition in Patients Implanted With Vibrant Soundbridge.

    Auditory thresholds in the soundfield at the preoperative interval compared to the 6 month postoperative interval.

    Measured: 6 months post initial activation

  2. Speech Perception in Noise (HINT Sentences) in Patients Implanted With Vibrant Soundbridge.

    Signal to Noise Ratio for sentences at the preoperative interval compared to the 6 month interval.

    Measured: 6 months post initial activation

  3. Residual Hearing in Patients Implanted With Vibrant Soundbridge

    Unaided hearing thresholds measured at the 10 month interval compared to the preoperative interval in order to assess any changes

    Measured: 10 months post initial activation

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted8 Sep 2008 (estimated)
  2. Study startDec 2007
  3. Primary completionMar 2014
  4. Study completionMar 2014

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
50 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00748540
Sponsor's protocol ID
G060227
Acronym
VSBRW
Status last verified
Sep 2019
First submitted
5 Sep 2008
Last updated
25 Sep 2019
Data monitoring committee
No

Publications

  • Colletti V, Soli SD, Carner M, Colletti L. Treatment of mixed hearing losses via implantation of a vibratory transducer on the round window. Int J Audiol. 2006 Oct;45(10):600-8. doi: 10.1080/14992020600840903.

    PubMed 17062502
  • Kiefer J, Arnold W, Staudenmaier R. Round window stimulation with an implantable hearing aid (Soundbridge) combined with autogenous reconstruction of the auricle - a new approach. ORL J Otorhinolaryngol Relat Spec. 2006;68(6):378-85. doi: 10.1159/000095282. Epub 2006 Oct 26.

    PubMed 17065833

Questions about this trial

What is this clinical trial studying?

A study testing Vibrant Soundbridge in people with Hearing Loss, run by Med-El Corporation at 11 sites in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 17 inclusion and 13 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 25 Sep 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 11 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Yes. Results are posted in the registry (first posted 31 Jul 2018). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Speech Perception in Quiet (Monosyllables) in Patients Implanted With Vibrant Soundbridge (time frame: 6 months post initial activation). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00748540, which also lists 2 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Sep 2019.

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